The 28-year-old Burundi international reportedly collapsed during a game between Chiefs and Green Mamba.
The eSwatini Premier League match was played at the Killarney Stadium in Piggs Peak outside the capital city, Mbabane.
According to reports by IOL, Faty collapsed on the field 15 minutes into the match and he was subsequently rushed to hospital where he was declared dead.
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Faty had a history of heart complications having previously collapsed during a friendly match while playing for Wits in Johannesburg in December 2015.
The former PSL champions and Faty parted ways with concerns over the player's heart condition in September 2016.
However, he joined Wits from Rwandan side APR in 2012 and insisted that he would not retire from the game.
Since leaving Wits, the former Trabzonspor attacker has played for National First Division (NFD) side Real Kings in South Africa and Malanti Chiefs.
The Bujumbura-born player also helped Burundi qualify for the upcoming 2019 Africa Cup of Nations (Afcon) finals, most notably featuring in the 1-1 draw with Gabon in the qualifiers.
He was hoping to feature for Burundi in their maiden appearance at the continental tournament which will be hosted by Egypt.